Automobile Front Body Linking Panel Triangular Cross-Section
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Solution Overview
Problem
Conventional joining structures for the front portion of an automobile body, specifically between the front side frame and the wheel house upper member, face challenges in efficiently transmitting loads due to the heavy weight and rigidity issues, particularly with the inclined linking portion's right-angled triangle shape, which hinders proportional weight reduction and rigidity enhancement.
Innovation Solution
A structure comprising a front side frame, a vertical member, a side frame gusset, and a linking panel with a right-angled triangle shape, where the linking panel is integrated with the side frame gusset and vertical member within plane T, enhancing shear force support and preventing bending, while reducing weight through integrated components and optimized assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the inclined linking portion is designed as a large-sized member with a squared U-shaped horizontal cross-section, then the structural strength is improved, but the weight increases significantly
Solution Approach 1:
The patent changes the geometric parameters of the linking portion by transitioning from a squared U-shaped cross-section to a triangular cross-section. This parameter change maintains the necessary structural strength while significantly reducing the material volume and weight of the component.
Solution Approach 2:
The patent employs a composite structure where the linking portion integrates multiple functional elements (linking, reinforcement, and load transmission) into a single triangular cross-section member, achieving both weight reduction and structural efficiency through optimized material distribution.
2Ease of manufacture
If the inclined linking portion is connected via plane B or plane H, then the assembly is simplified, but the load transmission efficiency deteriorates when loads are applied in plane T
Solution Approach 1:
The patent rotates the linking portion from connections in plane B or H to a new orientation where the triangular cross-section is disposed in plane T. This dimensional change enables direct load transmission along the fore-and-aft direction while maintaining assembly simplicity through the integrated triangular structure.
Solution Approach 2:
The patent changes the orientation parameter of the linking portion from vertical or lateral planes to the fore-and-aft plane T, optimizing the load transmission path to align with the primary direction of applied loads while preserving manufacturing ease.
3Stability of the object's composition
If the inclined linking portion has a right-angled triangle shape with large dimensions, then the rigidity is improved, but the weight increases and rigidity cannot be enhanced proportionally
Solution Approach 1:
The patent optimizes the triangular cross-section parameters by reducing the overall size while maintaining the right-angled triangle geometry. This parameter optimization achieves the required rigidity through efficient material distribution in the triangular form, preventing weight increase while maintaining structural stability.
Solution Approach 2:
The patent applies local quality optimization by concentrating material where structurally necessary in the triangular cross-section, placing more material in regions experiencing higher stress while minimizing material in lower-stress areas, thereby achieving rigidity without proportional weight increase.
Data Source
AI summary
A structure for a front portion of an automobile body includes a bulkhead side, which is joined to a front portion of a front side frame extending in the fore-and-aft direction extends in the vertical direction, and a side frame gusset, which provides a connection between the front portions of the front side frame and a wheel house upper member. The bulkhead side and the side frame gusset are joined by a linking panel having a right-angled triangle shape when viewed from the front within a plane perpendicular to an axis in the fore-and-aft direction. When a load is applied for relatively moving the front side frame, the side frame gusset and the wheel house upper member supporting the load by a shear force of the linking panel disposed within the plane enhance the rigidity of a front portion of a vehicle body and minimize any increase in weight.